Double-acting ratchet mechanism.



B. H. PAUGH. DOUBLE ACTING RATGHET MECHANISM.

APPLICATION FILED DEG.13. 1911.

Patented J an. 7, 1913.

Inventor Attorneys 'ASSIGNOR OF ONE-HALF T DOUBLE.ACTING RATGHETMECHANISM.

Specification of Letters Patent.

Patented J an. 7, 1913.

' Application filed December 13, 1911. SerialNo. 665,514.

To all whom it may concern;

Be it known that I, BENJAMIN H. PAUGH, a citizen of the United States,residing at Parsons, in the countyof Tucker and State of West Virginia,haveinvented a new and useful Double- Acting Ratchet Mechanism, of whichthe following is a specification. The present invention relates toimprove ments in double acting ratchet mechanisms, the primary object ofthe invention being the provision of a double acting ratchet mechanismfor driving drills, bits or other rotary tools, wherein a frame hasmounted thereon a' handle capable of an oscillatory movement incombination with a rotary shaft and operably connected with said handlewhereby the movement of the handle in one direction will impart the samerotation to the shaft as when moved in the opposite direction, one endofthe rotary shaft being provided with a tool receptacle while the otherend carries a feed screw mechanism adapted to remain stationary'du'ringthe r0 tation of the main shaft of the ratchet mechanism so as to impartthe desired feeding movement to the tool. V

A further object of the present invention is a pawl and ratchetcontrolled mechanism,

for locking a feed screw to a double acting rotary ratchet operatedmechanism so that a longitudinal 'movement may be imparted thereto,whereby the ratchet mechanism may be rotated without having suchlongitudinal movement imparted.

View which will appear as the description proceeds, the inventionresides in the combination and arrangement of parts and inthe With theforegoing and other objects in details of construction hereinafterdescribed and claimed, it being understood that changes in, the preciseembodiment of in vention herein disclosed can be made within the scopeof what is claimed without departing from the spiritof the invention.

In the drawings Figure 1 is an elevation of the complete mechanism takenfrom the handle side thereof, the handle being broken away above theyoke end thereof. Fig. 2 is a side elevation taken from the right of 1the yoke of the handle being broken away. Fig. 3 is a section taken online 8-3 of Fig. 2. Fig. 4 is a section taken on line 4:-4: of Fig. 2,dot-and-dash lines illustrating the cam in the position for throwing thepawl out of locking engagement with the toothed ratchet.

In the drawings, the numeral 1 designates the main frame of themechanismwhich has rotatably mounted therein the tubular standard or shaft 2,havingupon its lower end the annular rim or collar 3 for the receptionof the lower bevel pinion 4 which is keyed at 5 to the lower end of thesaid tubular shaft 2 so as to be rotatable therewith. The re duced bore6 in the rotatable end of the shaft 2 provides a tool receptacle,whereby a bit or drill or in fact anyobject that is adapted to berotated by the mechanism is operably connected to the said shaft 2:

In order to hold the shaft 2 relatively within the frame 1 and to coac'twith the upper face of the bevel pinion 4 in retaining TS PATEN '1 FlGE.i

BENJAMIN H. raven, or PARSONS, wnsr VIRGINIA,

the said shaft 2 in proper relation with the frame 1, a locking ring orcollar 7 is secured upon the said shaft 2. Secured exteriorly near theupper end of the shaft 2 is a locking or retaining ring or collar 8which forms a lower limiting means for the eccentric or cam 9, which isrotatably mounted upon the upper extreme endofthe collar shaft 2, thepurpose of which will presently appear.

Mounted within the upper end of the shaft 2 and rotatable therewithisthe re- 1.

dnced end 10 of the ratchet wheel 14, a feed screw 11 being mounted inthe threaded bore of thesame and projected within the hollow shaft 2, asclearly shown, and also without and above the ratchet 14 carrying at itstop an object engaging cleator point 12 which is adapted to enter astationary object such as indicated in dotted lines and as 13, wherebythe shaft 2 may be rotated as the screw 11 remains in a stationaryposition.

In order to arrest the shaft against a retrograde movement during therotation thereof and consequently lock the. feed screw 11, a pawl 15 ispivoted on a sliding casing 16 upon the upper end of an arm 17 which isconnected to the base 1 of the machine. In this box 16 is mounted astud'18 which is secured to thearm 17 and has connected thereto a pin19, which is also slidably mounted in the lug 21 of the casing .16 sothat the spring 20 will exert a tension to normally hold the pawl 15 inengagement with the teeth of the ratchet 14, a spring 22 being carriedby the casing 16 and engaging the pawl 15 to hold the same toward the 9is rotated from the position as shown in Fig. 4 to the dot-and-dash lineposition therein so that the inner face 23 ofthe casing 16 is engaged bythe cam and pushed outwardly to its fullest extent so as to disengagethe pawl 15 from the teeth of the ratchet 1 1 and permit it to have itsfree end held as shown in dot-and-dash lines, Fig. 4, bymeans of the pin15.

Formed integral with the base 1 of the machine and projecting fromopposite sides thereof are the trunnions 24 and 25, which have rotatablymounted thereupon the bevel pinions 26 and 27- which are in mesh at alltimes with the main drive bevel pinion 4, and mounted for oscillationupon the eX- treme ends of the trunnions 24 and 25 are the plates 28and29 which are connected by the securing screws 6 to the lower ends of theforks of the operating handle 31.

i In order to impart the desired rotation to the respective bevelpinions 26 and 27 ratchet wheels 32 and 33 are formedintegral with therespective pinions 26 and 27, and mounted within the sockets 34and' 35of the respective terminals of the forks 30 of'the operating lever arethe spring actuated detents or pawls 36 and 37 ,'whose engaging ends arein operable relation to the teeth of the respective ratchets 32 and 33,the ratchet 33 being operated when the lever 31 is moved away from theshaft 2, while the ratchet 33 is operated when the lever '31 is movedtoward the shaft 2, both of said ratchets moving in the direction of thearrow Fig. 1 was to impart the Same rotation to the bevel pinion 4: andtubular shaft 2 as indicated by the arrow below the pnion 4 in Fig. 1.

' From the foregoing description taken in connection with'the drawings,it is evident that when it is desired to drive any form of tool, suchfor instance as a drill, that the drill is placed within the bore 6 ofthe tubular'shaft' or main drive 2, while the pointed end 12 is placedagainst any rigid support, the drill being placed in position fordrilling the desired object. The'cam 9 is now moved 1n the position asshown in Fig. 1 so that the pawl 15 is thrown in engagement with theratchet 14. By the oscillation or reciprocation of the lever 31, thepinion 4: will be operated in the direction of the arrow Fig. 1 andimpart such movement to the shaft 2 andrto the drill carried thereby, soas to rotate the drill in the desired cutting direction and at the sametime rotate the ratchet 14 andas the feed screw 11 is held 7 rigidthrough its: point 12, the saidratchet will be fed downwardly carryingwith it the entire sleeve and the drill, so that the drill will be fedlongitudinally during the rota trunnions,

tion thereof to produce the desired cut or bore to the object beingoperated upon.

It is evident from the construction herein set forth, that the entiremechanism is assembled. upon the shaft 2 from the upper end thereof, abevel pinion 4: being first placed in position and keyed above theshoulder 3 while the frame 1 is slipped upon the shaft 2- and is held inplace thereupon by means of the retaining ring or collar 7 after whichthe retaining sleeve 8 is secured to the top of the shaft 2 to allowproper positioning ofthe cam or eccentric 9 after which the ratchet 1415 keyed within the upper end of the shaft 2 and finally the feed screw11 is placed within the threaded bore of the ratchet 14.

By reason of the base 1 being provided with the large trunnions 24: and25, in combination with the other features, a mechanism of. thischaracter can be made very strong, simple and durable and may be used inconnection with lathes or other work whereit is desired to impart arotary movement to a tool through a reciprocatory or oscillatoryactuating mechanism.

What is claimedisz 1. A double acting ratchet mechanism, having a framewith oppositely disposed trunnions, two ratchet gears rotatably mountedupon, said trunnions, a hollow shaft rotatably mounted in said frame andhaving a gearmeshing with said first two gears, a manually. controlledoscillatory lever operably connected to the frame and saidra'tchet gearsfor rotating said shaft, a ratchet wheel carried by and rotatable withthe shaft at the opposite end to the gear, a feed screw disposedconcentrically of the ratchet wheel and having means to enc s astationary object whereby the rotation .of the ratche'rrwill impart alongitudinal movement to the screw, and a pawl engaging the ratchetwheel to prevent a retrograde movement thereof. 7

V 2. A double acting ratchet mechanism, having a frame with oppositelydisposed two ratchet gears rotatably mounted upon said trunnions, ahollow shaft rotatably mounted in the frame and having a gear meshingwith said first two gears, a manually controlled oscillatory lever0perably connected to the frame and said ratchet gears for rotating saidshaft, a ratchet wheel carried by and rotatable with the shaft at theopposite. end to the gear, a feed screw disposed concentrically of theratchet wheel and having means to engage a stationary object whereby therotation of the ratchet will impart a longitudinal movement to thescrew, a spring actuated casing normally held toward the ratchet, a pawlto actuate the frame to move the pawl into and out of engagement withthe ratchet.

3. A double acting ratchet mechanism, having a frame, a tubular shaftrotatably mounted therein, mechanism operably connected to the lower endof said shaft for imparting a rotation to said shaft, a ratchet wheelmounted in the upper end of said shaft and provided with aconcentrically threaded opening therein, a feed screw mounted in saidconcentrically threaded opening of the ratchet wheel, and movable intoand out of the hollow shaft, means carried upon the upper end of saidscrew to engage a stationary object, whereby the rotation of the shaftwill impart a longitudinal movement to the screw, a pawl engaging theratchet wheel to prevent a retrograde movement thereof, and means formoving the pawl outwardly to disengage the same from the ratchet.

4;. A double acting ratchet mechanism, having a frame, a tubular shaftrotatably mounted therein, mechanism operably connected to the lower endof said shaft for imparting a rotation to said shaft, a ratchet wheelmounted in the upper end of said shaft and provided with aconcentrically threaded opening therein, a feed screw mounted in saidconcentrically threaded opening of the ratchet wheel and movable intoand out of the hollow shaft, means carried upon the upper end of saidfeed screw to engage a stationary object whereby rotation of the shaftwill impart a longitudinal movement to the screw, a spring actuatedcasing mounted adjacent to the ratchet wheel and normally held towardthe same,

a spring pawl mounted in said casing and normally in the path to engagewith the ratchet to prevent a retrograde movement thereof, and a cammounted upon the shaft and disposed to actuate the casing to move thecasing and the pawl, to release the pawl from the ratchet.

5. A double acting ratchet mechanism, having a frame with oppositelydisposed trunnions and having a vertical bore, a tubular shaft rotatablymounted in said vertioal bore and projecting through the frame, a gearcarried upon and rotatable with the lowerend of said shaft, aconcentrically disposed feed screw mounted in the upper end of saidshaft, means carried upon the upper end of said feed screw to engage astationary object whereby the rotation of the shaft will impart alongitudinal movement to said feed screw, two rotatable gears, one uponeach trunnion of the frame, in mesh with the gear of the tubular shaft,a ratchet wheel to each gear, each of which are arranged in oppositerelation to each other, a handle provided with a yoke terminalstraddling said gears and ratchet and mounted for oscillation upon theends of the trunnions of the frame, and a spring actuated detent carriedby each terminal of the yoke and disposed in operable relation with itsrespective ratchet.

In testimony that I claim the foregoing as my own, I have hereto affixedmy signature in the presence of two witnesses.

BENJAMIN H. PAUGH.

Witnesses:

A. V. DANIELSEN, E. A. HAYs.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

